For organizations responsible for aircraft operation and maintenance, inspecting critical aircraft-engine components is a routine preventive maintenance procedure. These procedures help to ensure the proper operation of the aircraft for flight safety. There are many components inside the engine that must be inspected, including turbine blades, compressor blades, and combustion chambers.

These components are inspected visually, primarily for potential problems such as corrosion, cracks, and damage from foreign objects. Because disassembling engines for inspection is time consuming and costly, industrial video borescopes are widely used for visual inspection of aircraft engines.

For example, when inspecting a turbine blade using a video borescope, the scope is inserted through the access port and secured in a position where the blade to be inspected is fully visible. The method of inspecting the condition of each blade by fixing the scope and rotating the turbine is generally adopted for inspection efficiency.

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